Profiles - Where Firefox stores your bookmarks, passwords and other user data

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  • Revision id: 75234
  • Created:
  • Creator: AliceWyman
  • Comment: [Fx 32] Passwords: signons.sqlite -> logins.json; added "User preferences", other edits
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: ideato
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: ideato
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All of the changes you make in Firefox, like your home page, what toolbars you use, saved passwords and your bookmarks, are all stored in a special folder, called a profile. Your profile folder is stored in a separate place from the Firefox program so that, if something ever goes wrong with Firefox, your information will still be there. It also means you can uninstall Firefox without losing your settings and you don't have to reinstall Firefox to clear your information or troubleshoot a problem.

This information is here for reference. You don't have to follow these steps unless you were directed to do so from another article.

How do I find my profile?

  1. Click the menu button Fx57menu , click Help and select Troubleshooting Information.From the Help menu, choose Troubleshooting Information. The Troubleshooting Information tab will open.

    • Under the Application Basics section, click on Open FolderShow in FinderOpen Directory. A window will open that contains your profile folder.Your profile folder will open.
    Note: If you are unable to open or use Firefox, follow the instructions in Finding your profile without opening Firefox.

Finding your profile without opening Firefox

  1. From the Start Screen, click the Desktop tile. The Desktop view will open.
  2. From the Desktop, hover in the lower right-hand corner to access the Charms.
  3. Select the Search charm. The Search sidebar will open.
  4. In the search box, type %APPDATA%\Mozilla\Firefox\Profiles\, without pressing Enter. A list of profiles will appear.
  5. Click on the profile with “default” in the name to open it in a window.

  1. Click the Windows Start button and type %APPDATA%\Mozilla\Firefox\Profiles\ in the Search box at the bottom of the Start menu, without pressing Enter. A list of profiles will appear at the top of the Start menu.
  2. Click on the profile with “default” in the name to open it in a window.

  1. Click the Windows Start button, and select Run….

  2. Type in %APPDATA%\Mozilla\Firefox\Profiles\ then click OK.

  3. A window will open containing profile folders.
  4. Double-click the folder with “default” in the name to open it.
  1. Open the Library folder for your Mac user account:
    • (OS X 10.6 or previous) Click the Finder icon in the dock. Your home folder will be selected, (usually the name of your Mac user account). In the right side of the window, click the Library folder to open it.
    • (OS X 10.7 or above) Click the Finder icon in the dock. On the menu bar, click the Go menu, hold down the option or alt key and select Library. A window will open containing your Library folder.
  2. Open the "Application Support" folder, then open the "Firefox" folder, and then the "Profiles" folder.
  3. Open the folder with “default” in the name to open your profile.
  1. (Ubuntu) Click the Places menu on the top right of the screen and select Home Folder. A File Browser window will appear.
  2. Click the View menu and select Show Hidden Files if it isn't already checked.
  3. Double click the folder marked .mozilla.
  4. Double click the folder marked firefox. Your profile folder is within this folder.

What information is stored in my profile?

Note: Only important information useful for recovering is described.
  • Cookies: A cookie is a bit of information stored on your computer by a website you’ve visited. Usually this is something like your site preferences or login status. Cookies are all stored in the cookies.sqlite file.
  • DOM storage: DOM Storage is designed to provide a larger, more secure, and easier-to-use alternative to storing information in cookies. Information is stored in the webappsstore.sqlite file for websites and in the chromeappsstore.sqlite for about:* pages.
  • Security certificate settings: The cert8.db file stores all your security certificate settings and any SSL certificates you have imported into Firefox.
  • Security device settings: The secmod.db file is the security module database.
  • Download actions: The mimeTypes.rdf file stores your preferences that tell Firefox what to do when it comes across a particular type of file. For example, these are the settings that tell Firefox to open a PDF file with Acrobat Reader when you click on it. For more information, see Change what Firefox does when you click on or download a file.
  • Plugin MIME type: The pluginreg.dat file stores Internet media types related to your installed plugins. For more information, see Use plugins to play audio, video, games and more.
  • Stored session: The sessionstore.js file stores the currently open tabs and windows. For more information, see Restore previous session - Configure when Firefox shows your most recent tabs and windows.
  • Toolbar customization: The localstore.rdf file stores toolbar and window size/position settings. For more information, see Customize Firefox controls, buttons and toolbars.
  • User preferences: The prefs.js file stores customized user preference settings, such as any changes you make in your Firefox OptionsPreferences dialogs. The optional user.js file, if one exists, will override any modified preferences.
  • User styles: If they exist, the \chrome\userChrome.css and \chrome\userContent.css files store user-defined changes to either how Firefox looks, or how certain websites or HTML elements look or act.

Working with profiles